NTE970

NTE970 Linear Integrated Circuit 3–Terminal Adjustable Positive Voltage Regulator 1.2V to 33V, 3A Description: The NTE970 is an adjustable 3–terminal positive voltage regulator in a TO3 type package capable of supplying in excess of 3 Amps over a 1.2V to 33V output range. Features: D Adjustable Output Down to 1.2V D Guaranteed 3A Output Current D Line Regulation Typically 0.005%/V D Load Regulation Typically 0.1% D Thermal Regulation D Current Limit Constant with Temperature Absolute Maximum Ratings: Input–Output Voltage Differential, VI–VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +125°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5°C/W Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C Electrical Characteristics: (VI –VO = 5V, IO = 1.5A, Pmax = 30W, 0° ≤ TJ ≤ +125°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Line Regulation Regline TA = +25°C, 3V ≤ VI – VO ≤ 35V, Note 1 – 0.005 0.030 %/V Load Regulation Regload VO ≤ 5V – 5 25 mV – 0.1 0.5 %VO VO ≥ 5V TA = +25°C, 0mA ≤ IO ≤ 3A, Note 1 Note 1. Regulation is measured at constant junction temperature. Change in output voltage due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. Electrical Characteristics (Cont’d): (VI –VO = 5V, IO = 1.5A, Pmax = 30W, 0° ≤ TJ ≤ +125°C unless otherwise specified) Parameter Symbol Thermal Regulation Test Conditions Min Typ Max Unit – 0.002 – %VO/W – 50 100 µA Regtherm TA = +25°C, Pulse = 20ms Adjustment Pin Current IAdj Adjustment Pin Current Change ∆IAdj 10mA ≤ IL ≤ 3A, 3V ≤ (VI – VO) ≤ 35V – 0.2 5.0 µA Reference Voltage Vref 10mA ≤ IO ≤ 3A, 3V ≤ (VI – VO) ≤ 35V, P ≤ 30W 1.20 1.25 1.30 V Line Regulation Regline 3V ≤ (VI – VO) ≤ 35V, Note 1 – 0.02 0.07 %/V Load Regulation Regload VO ≤ 5V – 20 70 mV VO ≥ 5V – 0.3 1.5 %VO 0° ≤ TJ ≤ +125°C – 1 – %VO Temperature Stability TS 10mA ≤ IO ≤ 3A, Note 1 Minimum Load Current ILmin VI – VO = 35V – 3.5 10 mA Maximum Output Current Limit Imax VI – VO ≤ 10V 3.0 4.5 – A VI – VO = 30V – 1.0 – A TA = +25°C, 10Hz ≤ f ≤ 10kHz – 0.003 – %VO VO = 10V, f = 120Hz – 65 – dB CAdj = 10µF 66 86 – dB TA = +125°C – 0.3 1.0 %/1.0k RMS Noise, % of VO N Ripple Rejection Ratio RR Long Term Stability S Note 1. Regulation is measured at constant junction temperature. Change in output voltage due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. .135 (3.45) Max .350 (8.89) .875 (22.2) Dia Max Seating Plane .312 (7.93) Min VIN .040 (1.02) 1.187 (30.16) .665 (16.9) .215 (5.45) .156 (3.96) Dia (2 Holes) .430 (10.92) .188 (4.8) R Max Adjust .525 (13.35) R Max VOUT/Case